A bench type special dismounting device for parking brake chambers of various vehicle models

Abstract

The utility model discloses a kind of multi-vehicle type parking brake chamber bench special dismounting device, including base, the base is sequentially arranged adjusting plate, backing plate, baffle;The adjusting plate linearly moves and connects slow-release rod, the baffle is provided with dismounting through-hole, and the slow-release rod axis passes through dismounting through-hole;Baffle, slow-release rod limit double-cavity brake master cylinder axial movement;The backing plate height is less than or equal to slow-release rod axis height, the backing plate upper end is provided with support groove, and the backing plate, baffle are detachably connected upper baffle cover, and the backing plate, baffle are connected by lower guard outside along support groove;Backing plate, lower guard, upper baffle cover limit double-cavity brake master cylinder radial movement.The utility model can safely and effectively release and compress the energy storage spring, return spring in double-cavity brake master cylinder, prevent spring abnormal deformation and pop out, avoid personnel serious injury, complete the dismounting of double-cavity brake master cylinder.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically a multi-model parking brake chamber desktop-type special disassembly and assembly device. Background Technology

[0002] Some heavy-duty off-road vehicles use dual-chamber brake calipers in their rear wheel braking systems. A dual-chamber brake caliper is a vehicle safety device that integrates service and parking brake functions. Widely used on the rear axle drive wheels, its main function is to achieve dual functionality through two independent chambers, coordinated by a brake relay valve. This ensures that the vehicle's service and parking brakes do not operate simultaneously, avoiding superposition of braking forces. Through an energy storage spring brake chamber, it provides both service braking and parking braking when stationary, preventing vehicles from rolling away on inclined surfaces.

[0003] The dual-chamber brake caliper mainly consists of a service brake chamber and a parking brake chamber. The parking brake chamber includes an energy storage spring and a piston rod. When compressed air enters the service chamber through the service brake port, it pushes the diaphragm to move, which in turn drives the push rod, causing the brake shoes to rub against the brake drum, thus achieving service braking, controlled by the brake pedal. When the compressed air is disconnected, the energy storage spring pushes the push rod, keeping the brake shoes in a state of friction, thus achieving parking braking, controlled by the handbrake valve. The diaphragm in the service brake chamber and the seals in the parking brake chamber are made of rubber. Due to frequent use and the influence of the working environment and rubber aging, the seals are easily damaged, leading to air leakage in the brake chamber and posing a braking safety hazard to the vehicle. Replacing large quantities of the assembly will increase maintenance costs. When disassembling and replacing the seals, because the tension of the energy storage spring is not released and the spring deformation is uneven, there is a risk that the spring may fly out and cause serious injury. Without specialized tools for disassembly, repairing and reusing old parts will also pose safety hazards.

[0004] Announcement No. CN214728762U discloses a disassembly tool for a brake caliper of an air brake vehicle, including a rectangular brake caliper mounting bracket. Within the rectangular frame of the brake caliper mounting bracket, from bottom to top, there are a brake caliper placement plate with adjustable vertical position and a brake caliper fixing plate with horizontal fixed position. The upper frame of the rectangular frame of the brake caliper mounting bracket and the center of the brake caliper fixing plate are respectively provided with a center bolt fixing hole I and a center bolt fixing hole II. The bottom of the rectangular frame of the brake caliper mounting bracket is also provided with a base to prevent the disassembly tool from tipping over, and a jack is provided on the base.

[0005] Publication No.: CN211163780U, which discloses a brake cylinder disassembly and assembly device, comprising a base and a fixing frame; support walls are vertically installed on both left and right sides of the top end of the base, the upper sides of the two support walls are horizontally and penetratingly connected with rotating shafts, and the other ends of the two rotating shafts are respectively fixedly connected with the upper sides of the left and right sides of the fixing frame. The front cross section of the fixing frame is in a shape of "hui", a threaded hole a is opened at the middle end of the top side of the fixing frame, and a threaded rod a is spirally connected to the threaded hole a.

[0006] Publication No.: CN210732369U, which discloses an energy storage cylinder disassembly and assembly frame, comprising a first disassembly and assembly frame for disassembling and assembling the foot brake part of the energy storage cylinder and a second disassembly and assembly frame for disassembling and assembling the hand brake part of the energy storage cylinder. The first disassembly and assembly frame comprises: a first base, a first frame, a height adjusting mechanism and a pressing assembly; the second disassembly and assembly frame comprises: a second base, a hydraulic jack and a second frame.

[0007] When the above prior art is used for disassembling and assembling a dual-chamber brake cylinder, there is no disassembly and assembly space for the pull rod nut, so that the disassembly and assembly of the dual-chamber brake cylinder cannot be performed. Utility Model Content

[0008] To make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present utility model provides a table-type special disassembly and assembly device for parking brake chambers of multiple vehicle models.

[0009] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0010] A table-type special disassembly and assembly device for parking brake chambers of multiple vehicle models, comprising a base, wherein the base is sequentially provided with an adjusting plate, a supporting plate and a baffle; the adjusting plate is connected with a slow-release rod in a linear moving manner, the baffle is provided with a disassembly and assembly through hole, and the axis of the slow-release rod passes through the disassembly and assembly through hole; the baffle and the slow-release rod limit the axial movement of the dual-chamber brake cylinder; the height of the supporting plate is ≤ the height of the axis of the slow-release rod, the upper end of the supporting plate is provided with a supporting groove, an upper shielding cover is detachably connected between the supporting plate and the baffle, and the supporting plate and the baffle are connected at the outer edge of the supporting groove through a lower protection member; the supporting plate, the lower protection member and the upper shielding cover limit the radial movement of the dual-chamber brake cylinder.

[0011] Further, the upper shielding cover comprises turnover covers, the turnover covers include a first turnover cover and a second turnover cover with the same structure, the first turnover cover and the second turnover cover are semi-annular plates, and the plate surfaces of the first turnover cover and the second turnover cover are connected through an upper protection member;

[0012] Specifically, the upper end of the supporting plate is divided into two bifurcated ends by the supporting groove, two ends of the first turnover cover are provided with protruding connecting plates which are connected with the two bifurcated ends of the supporting plate through bolts and nuts, and two ends of the second turnover cover are provided with protruding connecting plates which are connected with the baffle through bolts and nuts;

[0013] Specifically, the axis of the bolts is perpendicular to the first flip cover plate surface, the second flip cover plate surface, the pallet plate surface, and the baffle plate surface, and the four bolts are distributed in pairs on the two axes.

[0014] Furthermore, the support groove is a semi-circular groove, and the inner wall of the flip cover and the inner wall of the support groove can be joined together to form a complete circle, and the complete circle is coaxial with the release rod and the loading and unloading through hole.

[0015] Furthermore, the upper and lower protective components are the same type of reinforcing ribs;

[0016] Specifically, at least two ribs are provided between the first flip cover and the second flip cover, and are evenly distributed along the circumference of the inner wall of the flip cover;

[0017] Specifically, at least two reinforcing bars are welded between the support plate and the baffle, and they are evenly distributed along the circumference of the support groove.

[0018] Furthermore, the slow-release rod includes a lead screw;

[0019] Specifically, the lead screw is threadedly connected to the adjusting plate, and one end of the lead screw between the adjusting plate and the support plate is interference-fitted with and positioned to connect the inner ring of the bearing.

[0020] Specifically, the outer ring of the bearing is interference-fitted and positioned to connect to the bearing housing;

[0021] Specifically, the bearing housing is hollow, and a pressure plate is connected to the end of the bearing housing away from the bearing. The pressure plate is provided with positioning holes.

[0022] Specifically, the lead screw has a drive handle at the end furthest from the bearing.

[0023] Furthermore, the adjusting plate is provided with a lead screw through hole, and a lead screw nut is connected to the adjusting plate at the lead screw through hole, and the lead screw nut is threadedly connected to the lead screw.

[0024] Furthermore, a boss is machined on the end face of the lead screw that mates with the bearing. The outer wall of the boss is interference-fitted with the inner hole of the bearing. The positioning step between the boss and the lead screw body is used to position the bearing.

[0025] Furthermore, the port where the bearing housing mates with the bearing is provided with a bearing thrust plane and axial positioning of the bearing outer ring.

[0026] Furthermore, the bearing housing is tubular, the pressure plate is annular, and the center of the bearing housing and the center of the pressure plate are on the same axis.

[0027] Furthermore, two positioning holes are symmetrically arranged, and the positioning holes are elongated holes.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. This utility model can safely and effectively release and compress the energy storage spring and return spring in the dual-chamber brake cylinder, prevent abnormal deformation and ejection of the spring, avoid serious injury to personnel, and complete the disassembly and assembly of the dual-chamber brake cylinder.

[0030] 2. This utility model is easy to operate and carry, significantly improving the efficiency of disassembly and assembly.

[0031] 3. By repairing and reusing old components, this utility model reduces the need for replacement of assemblies and effectively lowers maintenance costs. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a multi-vehicle parking brake chamber desktop special disassembly and assembly device according to the present invention.

[0033] Figure 2 This is a schematic diagram showing the connection between the flip cover and the tray in this utility model.

[0034] Figure 3 This is a schematic diagram of the connection between the bearing housing and the bearing in this utility model.

[0035] Figure 4 This is a schematic diagram of the structure of a dual-chamber brake caliper.

[0036] In the diagram: 1-lead screw nut, 2-adjusting plate, 3-lead screw, 4-rib plate, 5-bearing, 6-bearing seat, 7-pressure plate, 8-base, 9-bolt, 10-flip cover, 11-support plate, 12-rib rod, 13-baffle, 14-loading and unloading through hole, 15-positioning hole, 24-bearing inner hole;

[0037] 16-Push rod, 17-Fixing bolt, 18-Clamp, 19-Service brake chamber, 20-Parking brake chamber bolt, 21-Parking brake chamber, 22-Energy storage spring, 23-Pull rod nut, 25-Return spring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Example 1:

[0040] Please see Figures 1 to 4This utility model provides a multi-vehicle parking brake chamber tabletop special disassembly and assembly device, including a base 8. An adjusting plate 2, a support plate 11, and a baffle 13 are sequentially arranged on the upper end of the base 8. A slow-release rod passes through the adjusting plate 2, and the slow-release rod is linearly connected to the adjusting plate 2. The height of the support plate 11 is less than or equal to the height of the slow-release rod's axis, and a support groove is provided on the upper end of the support plate 11. The baffle 13 has a loading and unloading through hole 14, through which the axis of the slow-release rod passes. The support plate 1... 1. The upper cover is detachably connected between the baffles 13. The support plate 11 and the baffles 13 are connected by the lower protective component at the outer edge of the support groove. In use, the dual-chamber brake slave pump is placed on the support groove and the lower protective component of the support plate 11. The pull rod nut 23 of the dual-chamber brake slave pump is located in the loading and unloading through hole 14. The slow release rod is matched with the dual-chamber brake slave pump and the upper cover is installed. At this time, the pull rod nut 23 is removed and the elastic force of the energy storage spring 22 is slowly released through the slow release rod to complete the disassembly of the dual-chamber brake slave pump.

[0041] Furthermore, the release rod includes a lead screw 3, which is threadedly connected to the adjusting plate 2. One end of the lead screw 3 between the adjusting plate 2 and the support plate 11 is interference-fitted and positioned to the inner ring of the bearing 5. The outer ring of the bearing 5 is interference-fitted and positioned to the bearing seat 6. The bearing seat 6 is hollow. The end of the bearing seat 6 away from the bearing 5 is connected to a pressure plate 7. The pressure plate 7 is provided with a positioning hole 15. The end of the lead screw 3 away from the bearing 5 is provided with a drive handle.

[0042] Specifically, the adjusting plate 2 is provided with a lead screw through hole, and the lead screw nut 1 is welded to the adjusting plate 2 at the lead screw through hole. The lead screw nut 1 is threadedly connected to the lead screw 3, which facilitates the left and right adjustment of the lead screw 3. The adjusting plate 2 is welded to the base 8, and the front, back, left and right sides of the adjusting plate 2 are welded with reinforcing plates 4 to increase the strength and stability of the adjusting plate 2.

[0043] Specifically, the end face of the lead screw 3 that mates with the bearing is machined with a boss, the outer wall of the boss is interference-fitted with the inner hole 24 of the bearing 5, and the positioning step between the boss and the body of the lead screw 3 is used to position the bearing 5; the drive handle is a hexagonal handle, which is convenient to operate with a socket wrench.

[0044] Specifically, the bearing housing 6 is used to accommodate the push rod 16; the port where the bearing housing 6 mates with the bearing 5 is provided with a bearing thrust plane, i.e. a stepped surface, to prevent the bearing 5 from moving axially, and the outer diameter of the bearing and the inner diameter of the bearing housing hole are interference fit.

[0045] Specifically, the bearing 5 is a tapered roller bearing that can transmit axial and radial forces. During the release of the elastic force of the energy storage spring 22, the bearing thrust plane, bearing 5, and positioning step transmit the force to the lead screw 3. The release of the elastic force of the energy storage spring 22 can be completed by slowly rotating the lead screw 3.

[0046] Specifically, the pressure plate 7 has a through hole in its center, the bearing seat 6 is tubular, the pressure plate 7 is annular, the center of the bearing seat 6 and the center of the pressure plate 7 are on the same axis, and the through hole of the pressure plate 7 is welded to the outer wall of the end of the bearing seat 6; the diameter of the through hole of the bearing seat 6 is larger than the diameter of the dual-chamber brake caliper push rod connector 16, the outer diameter of the pressure plate 7 is larger than the pitch of the dual-chamber brake caliper fixing bolt 17, and two positioning holes 15 are symmetrically arranged to cooperate with the fixing bolt 17 of the dual-chamber brake caliper to circumferentially lock the dual-chamber brake caliper. The positioning holes 15 are elongated holes, which are suitable for installing dual-chamber brake calipers of various models and different pitches.

[0047] Furthermore, the upper cover includes a flip cover 10, which includes a first flip cover and a second flip cover with identical structures. The first flip cover and the second flip cover are semi-annular plates. The surfaces of the first flip cover and the second flip cover are connected by an upper protective member. The upper end of the support plate 11 is divided into two forked ends by a support groove. The two ends of the first flip cover are provided with protruding connecting plates and are connected to the two forked ends of the support plate 11 by bolts 9 and nuts. The two ends of the second flip cover are provided with protruding connecting plates and are connected to the baffle 13 by bolts 9 and nuts. The axis of the bolts 9 is perpendicular to the surfaces of the first flip cover, the second flip cover, the support plate 11, and the baffle 13. The four bolts 9 are distributed in pairs on the two axes. The four bolts 9 can be used as pins to flip the cover and also to lock the upper cover, ensuring the safety and flexibility of the device. By removing the bolts 9 and nuts on the same side and loosening the bolts 9 and nuts on the other side, the upper cover can be flipped. After the upper cover is locked with the support plate 11 and the baffle 13, it can prevent the parking brake chamber 21 from popping out.

[0048] Specifically, the support groove is a semi-circular groove, and the inner wall of the flip cover and the inner wall of the support groove can be joined together to form a complete circle. The complete circle is coaxial with the release rod and the loading and unloading through hole 14.

[0049] Specifically, the upper and lower protective components are identical reinforcing bars 12. At least two reinforcing bars 12 are welded between the first and second flip covers, and in this embodiment, there are three, which are evenly distributed along the inner wall of the flip cover. At least two reinforcing bars 12 are welded between the support plate 11 and the baffle 13, and in this embodiment, there are five, which are evenly distributed along the circumference of the support groove. The reinforcing bars 12 form a barrel-shaped visible fixing frame, which can prevent the parking brake cavity 21 from popping out and facilitate the observation of the parking brake cavity 21 at any time during disassembly and assembly.

[0050] Specifically, the diameter of the loading and unloading through hole 14 is larger than the outer diameter of the parking brake chamber tie rod nut 23, which facilitates the installation and removal of the parking brake chamber tie rod nut 23.

[0051] Specifically, the inner diameter of the flip cover 10 and the inner diameter of the support groove of the tray 11 are the maximum values ​​of the outer diameter of the parking brake cavity 21 for various vehicle models, which makes it convenient to place parking brake cavities 21 of different diameters.

[0052] Example 2:

[0053] Based on Example 1, this example provides a method for using a multi-vehicle parking brake chamber benchtop-mounted disassembly and assembly device, including the following steps:

[0054] Before use, adjust the lead screw 3 outward, remove the bolt 9 on the same side of the flip cover 10, and flip it open;

[0055] Insert the push rod 16 of the dual-chamber brake slave cylinder into the center hole of the pressure plate 7, rotate the pressure plate 7 so that the fixing bolt 17 of the dual-chamber brake slave cylinder passes into the screw hole 15 of the pressure plate, and tighten it with a nut.

[0056] Adjust the lead screw 3 inward, and the pressure plate 7 pushes the dual-chamber brake caliper to the baffle 13. The baffle through hole 14 exposes the parking brake chamber tie rod nut 23. Adjust the lead screw 3 to tighten it so that the dual-chamber brake caliper cannot move axially.

[0057] Close the flip cover 10 and tighten the bolts 9 on the same side of the flip cover 10;

[0058] Remove the parking brake chamber bolt 20 and the tie rod nut 23 (if the service brake chamber 19 needs to be removed, the service brake chamber 19 clamp 18 can be removed); adjust the lead screw 3 outward to slowly release the energy storage spring 22 in the parking brake chamber 21 (and the return spring 25 in the service brake chamber 19), thereby completing the removal of the parking brake chamber 21 (and the service brake chamber 19).

[0059] The steps for installing the parking brake chamber 21 (and the service brake chamber 19) are the reverse of the disassembly steps.

[0060] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0061] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-vehicle parking brake chamber benchtop-mounted special disassembly and assembly device, comprising a base, characterized in that, The base is provided with an adjustment plate, a support plate, and a baffle in sequence; The adjusting plate is linearly connected to the slow-release rod, and the baffle is provided with a loading and unloading through hole, through which the axis of the slow-release rod passes; the baffle and the slow-release rod restrict the axial movement of the dual-chamber brake cylinder; The height of the support plate is less than or equal to the height of the slow-release rod axis. A support groove is provided at the upper end of the support plate. An upper cover is detachably connected between the support plate and the baffle. The support plate and the baffle are connected at the outer edge of the support groove by a lower protective component. The support plate, the lower protective component, and the upper cover restrict the radial movement of the dual-chamber brake cylinder.

2. The multi-vehicle parking brake chamber benchtop special disassembly and assembly device according to claim 1, characterized in that, The upper cover includes a flip cover, which includes a first flip cover and a second flip cover with the same structure. The first flip cover and the second flip cover are semi-annular plates, and the plates of the first flip cover and the second flip cover are connected by an upper protective member. The upper end of the tray is divided into two forked ends by a support groove. The two ends of the first flip cover are provided with protruding connecting plates that are connected to the two forked ends of the tray by bolts and nuts. The two ends of the second flip cover are provided with protruding connecting plates that are connected to the baffle by bolts and nuts. The axis of the bolts is perpendicular to the first flip cover plate surface, the second flip cover plate surface, the pallet plate surface, and the baffle plate surface, and the four bolts are distributed in pairs on the two axes.

3. The multi-vehicle parking brake chamber benchtop special disassembly and assembly device according to claim 2, characterized in that, The support groove is a semi-circular groove, and the inner wall of the flip cover and the inner wall of the support groove can be joined together to form a complete circle. The complete circle is coaxial with the slow-release rod and the loading and unloading through hole.

4. A multi-vehicle parking brake chamber benchtop-mounted special disassembly and assembly device according to claim 2, characterized in that, The upper and lower protective components are the same stiffening rods; At least two ribs are provided between the first flip cover and the second flip cover, and are evenly distributed along the circumference of the inner wall of the flip cover; At least two reinforcing bars are welded between the support plate and the baffle, and are evenly distributed along the circumference of the support groove.

5. A multi-vehicle parking brake chamber benchtop-type special disassembly and assembly device according to claim 1, characterized in that, The slow-release lever includes a lead screw; The lead screw is threadedly connected to the adjusting plate, and one end of the lead screw between the adjusting plate and the support plate is interference-fitted and positioned to connect the inner ring of the bearing. The outer ring of the bearing is interference-fitted and positioned to connect to the bearing housing. The bearing housing is hollow, and a pressure plate is connected to the end of the bearing housing away from the bearing. The pressure plate is provided with positioning holes. The lead screw has a drive handle at the end furthest from the bearing.

6. A multi-vehicle parking brake chamber benchtop-mounted special disassembly and assembly device according to claim 5, characterized in that, The adjusting plate is provided with a lead screw through hole, and the lead screw nut is connected to the adjusting plate at the lead screw through hole. The lead screw nut is threadedly connected to the lead screw.

7. A multi-vehicle parking brake chamber benchtop-mounted special disassembly and assembly device according to claim 5, characterized in that, The end face of the lead screw that mates with the bearing is machined with a boss. The outer wall of the boss is interference-fitted with the inner hole of the bearing. The positioning step between the boss and the lead screw body is used to position the bearing.

8. A multi-vehicle parking brake chamber benchtop-mounted special disassembly and assembly device according to claim 5, characterized in that, The port where the bearing housing mates with the bearing is configured with the bearing thrust plane and the bearing outer ring for axial positioning.

9. A multi-vehicle parking brake chamber benchtop-type special disassembly and assembly device according to claim 5, characterized in that, The bearing housing is tubular, the pressure plate is annular, and the center of the bearing housing and the center of the pressure plate are on the same axis.

10. A multi-vehicle parking brake chamber benchtop-type special disassembly and assembly device according to claim 5, characterized in that, Two positioning holes are symmetrically arranged, and each positioning hole is an elongated hole.

Images